Home / 28,962.40-39,966.96-16,389.76

Finding the Fourth Proportional to 28,962.40, 39,966.96 and 16,389.76

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Solution

The fourth proportional to 28,962.40, 39,966.96 and 16,389.76 is: 22,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.40 : 39,966.96 = 16,389.76 : x
  2. Step 2: Convert to fraction form
    28,962.40/39,966.96 = 16,389.76/x
  3. Step 3: Cross multiply
    28,962.40x = 39,966.96 × 16,389.76
  4. Step 4: Simplify right side
    28,962.40x = 655,048,882.33
  5. Step 5: Solve for x
    x = 655,048,882.33/28,962.40
  6. Step 6: Final answer
    x = 22,617.22

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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.