Home / 21,810.72-30,068.56-14,725.92

Finding the Fourth Proportional to 21,810.72, 30,068.56 and 14,725.92

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Solution

The fourth proportional to 21,810.72, 30,068.56 and 14,725.92 is: 20,301.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.72 : 30,068.56 = 14,725.92 : x
  2. Step 2: Convert to fraction form
    21,810.72/30,068.56 = 14,725.92/x
  3. Step 3: Cross multiply
    21,810.72x = 30,068.56 × 14,725.92
  4. Step 4: Simplify right side
    21,810.72x = 442,787,209.08
  5. Step 5: Solve for x
    x = 442,787,209.08/21,810.72
  6. Step 6: Final answer
    x = 20,301.36

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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.