Home / 8,312,031.40-12,468,047.10-6,989,333.80

Finding the Fourth Proportional to 8,312,031.40, 12,468,047.10 and 6,989,333.80

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Solution

The fourth proportional to 8,312,031.40, 12,468,047.10 and 6,989,333.80 is: 10,484,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312,031.40 : 12,468,047.10 = 6,989,333.80 : x
  2. Step 2: Convert to fraction form
    8,312,031.40/12,468,047.10 = 6,989,333.80/x
  3. Step 3: Cross multiply
    8,312,031.40x = 12,468,047.10 × 6,989,333.80
  4. Step 4: Simplify right side
    8,312,031.40x = 87,143,343,016,021.97
  5. Step 5: Solve for x
    x = 87,143,343,016,021.97/8,312,031.40
  6. Step 6: Final answer
    x = 10,484,000.70

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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.