Home / 22,988.99-31,728.50-21,488.16

Finding the Fourth Proportional to 22,988.99, 31,728.50 and 21,488.16

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Solution

The fourth proportional to 22,988.99, 31,728.50 and 21,488.16 is: 29,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988.99 : 31,728.50 = 21,488.16 : x
  2. Step 2: Convert to fraction form
    22,988.99/31,728.50 = 21,488.16/x
  3. Step 3: Cross multiply
    22,988.99x = 31,728.50 × 21,488.16
  4. Step 4: Simplify right side
    22,988.99x = 681,786,977.12
  5. Step 5: Solve for x
    x = 681,786,977.12/22,988.99
  6. Step 6: Final answer
    x = 29,657.12

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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.