Home / 15,387.16-21,242.82-10,089.76

Finding the Fourth Proportional to 15,387.16, 21,242.82 and 10,089.76

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Solution

The fourth proportional to 15,387.16, 21,242.82 and 10,089.76 is: 13,929.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.16 : 21,242.82 = 10,089.76 : x
  2. Step 2: Convert to fraction form
    15,387.16/21,242.82 = 10,089.76/x
  3. Step 3: Cross multiply
    15,387.16x = 21,242.82 × 10,089.76
  4. Step 4: Simplify right side
    15,387.16x = 214,334,955.52
  5. Step 5: Solve for x
    x = 214,334,955.52/15,387.16
  6. Step 6: Final answer
    x = 13,929.47

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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.