Home / 39,070.10-53,916.88-21,165.06

Finding the Fourth Proportional to 39,070.10, 53,916.88 and 21,165.06

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Solution

The fourth proportional to 39,070.10, 53,916.88 and 21,165.06 is: 29,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,070.10 : 53,916.88 = 21,165.06 : x
  2. Step 2: Convert to fraction form
    39,070.10/53,916.88 = 21,165.06/x
  3. Step 3: Cross multiply
    39,070.10x = 53,916.88 × 21,165.06
  4. Step 4: Simplify right side
    39,070.10x = 1,141,154,000.21
  5. Step 5: Solve for x
    x = 1,141,154,000.21/39,070.10
  6. Step 6: Final answer
    x = 29,207.86

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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.