Home / 15,331.99-21,159.89-8,526.69

Finding the Fourth Proportional to 15,331.99, 21,159.89 and 8,526.69

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Solution

The fourth proportional to 15,331.99, 21,159.89 and 8,526.69 is: 11,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.99 : 21,159.89 = 8,526.69 : x
  2. Step 2: Convert to fraction form
    15,331.99/21,159.89 = 8,526.69/x
  3. Step 3: Cross multiply
    15,331.99x = 21,159.89 × 8,526.69
  4. Step 4: Simplify right side
    15,331.99x = 180,423,737.98
  5. Step 5: Solve for x
    x = 180,423,737.98/15,331.99
  6. Step 6: Final answer
    x = 11,767.80

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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.