Home / 15,501.04-21,399.60-13,109.92

Finding the Fourth Proportional to 15,501.04, 21,399.60 and 13,109.92

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Solution

The fourth proportional to 15,501.04, 21,399.60 and 13,109.92 is: 18,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.04 : 21,399.60 = 13,109.92 : x
  2. Step 2: Convert to fraction form
    15,501.04/21,399.60 = 13,109.92/x
  3. Step 3: Cross multiply
    15,501.04x = 21,399.60 × 13,109.92
  4. Step 4: Simplify right side
    15,501.04x = 280,547,044.03
  5. Step 5: Solve for x
    x = 280,547,044.03/15,501.04
  6. Step 6: Final answer
    x = 18,098.59

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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.