Home / 30,438,642.76-42,005,316.90-16,687,311.64

Finding the Fourth Proportional to 30,438,642.76, 42,005,316.90 and 16,687,311.64

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Solution

The fourth proportional to 30,438,642.76, 42,005,316.90 and 16,687,311.64 is: 23,028,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438,642.76 : 42,005,316.90 = 16,687,311.64 : x
  2. Step 2: Convert to fraction form
    30,438,642.76/42,005,316.90 = 16,687,311.64/x
  3. Step 3: Cross multiply
    30,438,642.76x = 42,005,316.90 × 16,687,311.64
  4. Step 4: Simplify right side
    30,438,642.76x = 700,955,813,647,258.75
  5. Step 5: Solve for x
    x = 700,955,813,647,258.75/30,438,642.76
  6. Step 6: Final answer
    x = 23,028,484.52

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Double scale
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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.