Home / 15,615.08-21,545.38-10,580.20

Finding the Fourth Proportional to 15,615.08, 21,545.38 and 10,580.20

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Solution

The fourth proportional to 15,615.08, 21,545.38 and 10,580.20 is: 14,598.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.08 : 21,545.38 = 10,580.20 : x
  2. Step 2: Convert to fraction form
    15,615.08/21,545.38 = 10,580.20/x
  3. Step 3: Cross multiply
    15,615.08x = 21,545.38 × 10,580.20
  4. Step 4: Simplify right side
    15,615.08x = 227,954,429.48
  5. Step 5: Solve for x
    x = 227,954,429.48/15,615.08
  6. Step 6: Final answer
    x = 14,598.35

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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.