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Finding the Fourth Proportional to 13,608,658.30, 20,412,987.60 and 9,357,130.30

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Solution

The fourth proportional to 13,608,658.30, 20,412,987.60 and 9,357,130.30 is: 14,035,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,658.30 : 20,412,987.60 = 9,357,130.30 : x
  2. Step 2: Convert to fraction form
    13,608,658.30/20,412,987.60 = 9,357,130.30/x
  3. Step 3: Cross multiply
    13,608,658.30x = 20,412,987.60 × 9,357,130.30
  4. Step 4: Simplify right side
    13,608,658.30x = 191,006,984,785,484.31
  5. Step 5: Solve for x
    x = 191,006,984,785,484.31/13,608,658.30
  6. Step 6: Final answer
    x = 14,035,695.55

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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.