Home / 22,971.79-31,702.28-12,899.71

Finding the Fourth Proportional to 22,971.79, 31,702.28 and 12,899.71

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Solution

The fourth proportional to 22,971.79, 31,702.28 and 12,899.71 is: 17,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,971.79 : 31,702.28 = 12,899.71 : x
  2. Step 2: Convert to fraction form
    22,971.79/31,702.28 = 12,899.71/x
  3. Step 3: Cross multiply
    22,971.79x = 31,702.28 × 12,899.71
  4. Step 4: Simplify right side
    22,971.79x = 408,950,153.84
  5. Step 5: Solve for x
    x = 408,950,153.84/22,971.79
  6. Step 6: Final answer
    x = 17,802.28

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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.