Home / 39,461.90-54,458.58-21,557.19

Finding the Fourth Proportional to 39,461.90, 54,458.58 and 21,557.19

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Solution

The fourth proportional to 39,461.90, 54,458.58 and 21,557.19 is: 29,749.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,461.90 : 54,458.58 = 21,557.19 : x
  2. Step 2: Convert to fraction form
    39,461.90/54,458.58 = 21,557.19/x
  3. Step 3: Cross multiply
    39,461.90x = 54,458.58 × 21,557.19
  4. Step 4: Simplify right side
    39,461.90x = 1,173,973,956.19
  5. Step 5: Solve for x
    x = 1,173,973,956.19/39,461.90
  6. Step 6: Final answer
    x = 29,749.56

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Half scale
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Double scale
Find fourth proportional to 39,462.90, 54,459.96 and 21,558.19
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.