Home / 21,252,056.40-31,878,084.60-12,749,000.40

Finding the Fourth Proportional to 21,252,056.40, 31,878,084.60 and 12,749,000.40

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Solution

The fourth proportional to 21,252,056.40, 31,878,084.60 and 12,749,000.40 is: 19,123,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252,056.40 : 31,878,084.60 = 12,749,000.40 : x
  2. Step 2: Convert to fraction form
    21,252,056.40/31,878,084.60 = 12,749,000.40/x
  3. Step 3: Cross multiply
    21,252,056.40x = 31,878,084.60 × 12,749,000.40
  4. Step 4: Simplify right side
    21,252,056.40x = 406,413,713,316,633.88
  5. Step 5: Solve for x
    x = 406,413,713,316,633.88/21,252,056.40
  6. Step 6: Final answer
    x = 19,123,500.60

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Similar ratio
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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.