Home / 21,428.52-32,130.76-14,681.72

Finding the Fourth Proportional to 21,428.52, 32,130.76 and 14,681.72

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Solution

The fourth proportional to 21,428.52, 32,130.76 and 14,681.72 is: 22,014.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.52 : 32,130.76 = 14,681.72 : x
  2. Step 2: Convert to fraction form
    21,428.52/32,130.76 = 14,681.72/x
  3. Step 3: Cross multiply
    21,428.52x = 32,130.76 × 14,681.72
  4. Step 4: Simplify right side
    21,428.52x = 471,734,821.71
  5. Step 5: Solve for x
    x = 471,734,821.71/21,428.52
  6. Step 6: Final answer
    x = 22,014.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.