Home / 20,956,854.30-31,435,281.45-18,437,430.30

Finding the Fourth Proportional to 20,956,854.30, 31,435,281.45 and 18,437,430.30

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Solution

The fourth proportional to 20,956,854.30, 31,435,281.45 and 18,437,430.30 is: 27,656,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,854.30 : 31,435,281.45 = 18,437,430.30 : x
  2. Step 2: Convert to fraction form
    20,956,854.30/31,435,281.45 = 18,437,430.30/x
  3. Step 3: Cross multiply
    20,956,854.30x = 31,435,281.45 × 18,437,430.30
  4. Step 4: Simplify right side
    20,956,854.30x = 579,585,810,695,258
  5. Step 5: Solve for x
    x = 579,585,810,695,258/20,956,854.30
  6. Step 6: Final answer
    x = 27,656,145.45

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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.