Home / 20,139,340.60-30,209,010.90-18,123,801.40

Finding the Fourth Proportional to 20,139,340.60, 30,209,010.90 and 18,123,801.40

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Solution

The fourth proportional to 20,139,340.60, 30,209,010.90 and 18,123,801.40 is: 27,185,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,340.60 : 30,209,010.90 = 18,123,801.40 : x
  2. Step 2: Convert to fraction form
    20,139,340.60/30,209,010.90 = 18,123,801.40/x
  3. Step 3: Cross multiply
    20,139,340.60x = 30,209,010.90 × 18,123,801.40
  4. Step 4: Simplify right side
    20,139,340.60x = 547,502,114,042,035.19
  5. Step 5: Solve for x
    x = 547,502,114,042,035.19/20,139,340.60
  6. Step 6: Final answer
    x = 27,185,702.10

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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.