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Finding the Fourth Proportional to 20,053.90, 30,061.02 and 9,505.40

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Solution

The fourth proportional to 20,053.90, 30,061.02 and 9,505.40 is: 14,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.90 : 30,061.02 = 9,505.40 : x
  2. Step 2: Convert to fraction form
    20,053.90/30,061.02 = 9,505.40/x
  3. Step 3: Cross multiply
    20,053.90x = 30,061.02 × 9,505.40
  4. Step 4: Simplify right side
    20,053.90x = 285,742,019.51
  5. Step 5: Solve for x
    x = 285,742,019.51/20,053.90
  6. Step 6: Final answer
    x = 14,248.70

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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.