Home / 15,507.27-21,402.07-15,085.08

Finding the Fourth Proportional to 15,507.27, 21,402.07 and 15,085.08

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Solution

The fourth proportional to 15,507.27, 21,402.07 and 15,085.08 is: 20,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.27 : 21,402.07 = 15,085.08 : x
  2. Step 2: Convert to fraction form
    15,507.27/21,402.07 = 15,085.08/x
  3. Step 3: Cross multiply
    15,507.27x = 21,402.07 × 15,085.08
  4. Step 4: Simplify right side
    15,507.27x = 322,851,831.11
  5. Step 5: Solve for x
    x = 322,851,831.11/15,507.27
  6. Step 6: Final answer
    x = 20,819.39

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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.