Home / 22,988.95-31,728.68-13,429.95

Finding the Fourth Proportional to 22,988.95, 31,728.68 and 13,429.95

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Solution

The fourth proportional to 22,988.95, 31,728.68 and 13,429.95 is: 18,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988.95 : 31,728.68 = 13,429.95 : x
  2. Step 2: Convert to fraction form
    22,988.95/31,728.68 = 13,429.95/x
  3. Step 3: Cross multiply
    22,988.95x = 31,728.68 × 13,429.95
  4. Step 4: Simplify right side
    22,988.95x = 426,114,628.67
  5. Step 5: Solve for x
    x = 426,114,628.67/22,988.95
  6. Step 6: Final answer
    x = 18,535.63

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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.