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Finding the Fourth Proportional to 14,160.71, 21,199.53 and 9,929.29

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Solution

The fourth proportional to 14,160.71, 21,199.53 and 9,929.29 is: 14,864.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,160.71 : 21,199.53 = 9,929.29 : x
  2. Step 2: Convert to fraction form
    14,160.71/21,199.53 = 9,929.29/x
  3. Step 3: Cross multiply
    14,160.71x = 21,199.53 × 9,929.29
  4. Step 4: Simplify right side
    14,160.71x = 210,496,281.23
  5. Step 5: Solve for x
    x = 210,496,281.23/14,160.71
  6. Step 6: Final answer
    x = 14,864.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.