Home / 21,005,614.80-31,508,422.20-7,543,803.60

Finding the Fourth Proportional to 21,005,614.80, 31,508,422.20 and 7,543,803.60

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Solution

The fourth proportional to 21,005,614.80, 31,508,422.20 and 7,543,803.60 is: 11,315,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,614.80 : 31,508,422.20 = 7,543,803.60 : x
  2. Step 2: Convert to fraction form
    21,005,614.80/31,508,422.20 = 7,543,803.60/x
  3. Step 3: Cross multiply
    21,005,614.80x = 31,508,422.20 × 7,543,803.60
  4. Step 4: Simplify right side
    21,005,614.80x = 237,693,348,822,679.91
  5. Step 5: Solve for x
    x = 237,693,348,822,679.91/21,005,614.80
  6. Step 6: Final answer
    x = 11,315,705.40

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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.