Home / 42,840.81-64,263.62-13,256.34

Finding the Fourth Proportional to 42,840.81, 64,263.62 and 13,256.34

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Solution

The fourth proportional to 42,840.81, 64,263.62 and 13,256.34 is: 19,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,840.81 : 64,263.62 = 13,256.34 : x
  2. Step 2: Convert to fraction form
    42,840.81/64,263.62 = 13,256.34/x
  3. Step 3: Cross multiply
    42,840.81x = 64,263.62 × 13,256.34
  4. Step 4: Simplify right side
    42,840.81x = 851,900,330.07
  5. Step 5: Solve for x
    x = 851,900,330.07/42,840.81
  6. Step 6: Final answer
    x = 19,885.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.