Home / 28,502,367.40-42,738,171.13-12,931,697.70

Finding the Fourth Proportional to 28,502,367.40, 42,738,171.13 and 12,931,697.70

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Solution

The fourth proportional to 28,502,367.40, 42,738,171.13 and 12,931,697.70 is: 19,390,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502,367.40 : 42,738,171.13 = 12,931,697.70 : x
  2. Step 2: Convert to fraction form
    28,502,367.40/42,738,171.13 = 12,931,697.70/x
  3. Step 3: Cross multiply
    28,502,367.40x = 42,738,171.13 × 12,931,697.70
  4. Step 4: Simplify right side
    28,502,367.40x = 552,677,109,320,192
  5. Step 5: Solve for x
    x = 552,677,109,320,192/28,502,367.40
  6. Step 6: Final answer
    x = 19,390,568.56

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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.