Home / 10,990,721.40-16,478,402.10-6,500,686.20

Finding the Fourth Proportional to 10,990,721.40, 16,478,402.10 and 6,500,686.20

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Solution

The fourth proportional to 10,990,721.40, 16,478,402.10 and 6,500,686.20 is: 9,746,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990,721.40 : 16,478,402.10 = 6,500,686.20 : x
  2. Step 2: Convert to fraction form
    10,990,721.40/16,478,402.10 = 6,500,686.20/x
  3. Step 3: Cross multiply
    10,990,721.40x = 16,478,402.10 × 6,500,686.20
  4. Step 4: Simplify right side
    10,990,721.40x = 107,120,921,129,521.02
  5. Step 5: Solve for x
    x = 107,120,921,129,521.02/10,990,721.40
  6. Step 6: Final answer
    x = 9,746,486.81

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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.