Home / 21,657.83-29,876.40-14,931.90

Finding the Fourth Proportional to 21,657.83, 29,876.40 and 14,931.90

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Solution

The fourth proportional to 21,657.83, 29,876.40 and 14,931.90 is: 20,598.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.83 : 29,876.40 = 14,931.90 : x
  2. Step 2: Convert to fraction form
    21,657.83/29,876.40 = 14,931.90/x
  3. Step 3: Cross multiply
    21,657.83x = 29,876.40 × 14,931.90
  4. Step 4: Simplify right side
    21,657.83x = 446,111,417.16
  5. Step 5: Solve for x
    x = 446,111,417.16/21,657.83
  6. Step 6: Final answer
    x = 20,598.16

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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.