Home / 21,490,890.60-32,236,335.90-19,139,428.20

Finding the Fourth Proportional to 21,490,890.60, 32,236,335.90 and 19,139,428.20

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Solution

The fourth proportional to 21,490,890.60, 32,236,335.90 and 19,139,428.20 is: 28,709,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490,890.60 : 32,236,335.90 = 19,139,428.20 : x
  2. Step 2: Convert to fraction form
    21,490,890.60/32,236,335.90 = 19,139,428.20/x
  3. Step 3: Cross multiply
    21,490,890.60x = 32,236,335.90 × 19,139,428.20
  4. Step 4: Simplify right side
    21,490,890.60x = 616,985,036,389,132.38
  5. Step 5: Solve for x
    x = 616,985,036,389,132.38/21,490,890.60
  6. Step 6: Final answer
    x = 28,709,142.30

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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.