Home / 28,107,089.40-42,160,634.10-12,990,545.40

Finding the Fourth Proportional to 28,107,089.40, 42,160,634.10 and 12,990,545.40

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Solution

The fourth proportional to 28,107,089.40, 42,160,634.10 and 12,990,545.40 is: 19,485,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107,089.40 : 42,160,634.10 = 12,990,545.40 : x
  2. Step 2: Convert to fraction form
    28,107,089.40/42,160,634.10 = 12,990,545.40/x
  3. Step 3: Cross multiply
    28,107,089.40x = 42,160,634.10 × 12,990,545.40
  4. Step 4: Simplify right side
    28,107,089.40x = 547,689,631,368,838.19
  5. Step 5: Solve for x
    x = 547,689,631,368,838.19/28,107,089.40
  6. Step 6: Final answer
    x = 19,485,818.10

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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.