Home / 21,061,553.40-31,592,330.10-18,670,068.90

Finding the Fourth Proportional to 21,061,553.40, 31,592,330.10 and 18,670,068.90

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Solution

The fourth proportional to 21,061,553.40, 31,592,330.10 and 18,670,068.90 is: 28,005,103.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,553.40 : 31,592,330.10 = 18,670,068.90 : x
  2. Step 2: Convert to fraction form
    21,061,553.40/31,592,330.10 = 18,670,068.90/x
  3. Step 3: Cross multiply
    21,061,553.40x = 31,592,330.10 × 18,670,068.90
  4. Step 4: Simplify right side
    21,061,553.40x = 589,830,979,678,543.88
  5. Step 5: Solve for x
    x = 589,830,979,678,543.88/21,061,553.40
  6. Step 6: Final answer
    x = 28,005,103.35

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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.