Home / 21,264,016.80-31,896,025.20-21,138,045.60

Finding the Fourth Proportional to 21,264,016.80, 31,896,025.20 and 21,138,045.60

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Solution

The fourth proportional to 21,264,016.80, 31,896,025.20 and 21,138,045.60 is: 31,707,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264,016.80 : 31,896,025.20 = 21,138,045.60 : x
  2. Step 2: Convert to fraction form
    21,264,016.80/31,896,025.20 = 21,138,045.60/x
  3. Step 3: Cross multiply
    21,264,016.80x = 31,896,025.20 × 21,138,045.60
  4. Step 4: Simplify right side
    21,264,016.80x = 674,219,635,136,349.12
  5. Step 5: Solve for x
    x = 674,219,635,136,349.12/21,264,016.80
  6. Step 6: Final answer
    x = 31,707,068.40

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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.