Home / 39,461.04-54,457.54-21,557.70

Finding the Fourth Proportional to 39,461.04, 54,457.54 and 21,557.70

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Solution

The fourth proportional to 39,461.04, 54,457.54 and 21,557.70 is: 29,750.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,461.04 : 54,457.54 = 21,557.70 : x
  2. Step 2: Convert to fraction form
    39,461.04/54,457.54 = 21,557.70/x
  3. Step 3: Cross multiply
    39,461.04x = 54,457.54 × 21,557.70
  4. Step 4: Simplify right side
    39,461.04x = 1,173,979,310.06
  5. Step 5: Solve for x
    x = 1,173,979,310.06/39,461.04
  6. Step 6: Final answer
    x = 29,750.34

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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.