Home / 20,785,415.40-31,178,123.10-17,006,279.40

Finding the Fourth Proportional to 20,785,415.40, 31,178,123.10 and 17,006,279.40

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Solution

The fourth proportional to 20,785,415.40, 31,178,123.10 and 17,006,279.40 is: 25,509,419.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,415.40 : 31,178,123.10 = 17,006,279.40 : x
  2. Step 2: Convert to fraction form
    20,785,415.40/31,178,123.10 = 17,006,279.40/x
  3. Step 3: Cross multiply
    20,785,415.40x = 31,178,123.10 × 17,006,279.40
  4. Step 4: Simplify right side
    20,785,415.40x = 530,223,872,606,194.12
  5. Step 5: Solve for x
    x = 530,223,872,606,194.12/20,785,415.40
  6. Step 6: Final answer
    x = 25,509,419.10

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Similar ratio
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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.