Home / 22,929.74-31,643.39-12,720.70

Finding the Fourth Proportional to 22,929.74, 31,643.39 and 12,720.70

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Solution

The fourth proportional to 22,929.74, 31,643.39 and 12,720.70 is: 17,554.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,929.74 : 31,643.39 = 12,720.70 : x
  2. Step 2: Convert to fraction form
    22,929.74/31,643.39 = 12,720.70/x
  3. Step 3: Cross multiply
    22,929.74x = 31,643.39 × 12,720.70
  4. Step 4: Simplify right side
    22,929.74x = 402,525,928.46
  5. Step 5: Solve for x
    x = 402,525,928.46/22,929.74
  6. Step 6: Final answer
    x = 17,554.76

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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.