Home / 20,710,785.60-28,581,016.80-11,544,009.60

Finding the Fourth Proportional to 20,710,785.60, 28,581,016.80 and 11,544,009.60

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Solution

The fourth proportional to 20,710,785.60, 28,581,016.80 and 11,544,009.60 is: 15,930,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710,785.60 : 28,581,016.80 = 11,544,009.60 : x
  2. Step 2: Convert to fraction form
    20,710,785.60/28,581,016.80 = 11,544,009.60/x
  3. Step 3: Cross multiply
    20,710,785.60x = 28,581,016.80 × 11,544,009.60
  4. Step 4: Simplify right side
    20,710,785.60x = 329,939,532,316,961.25
  5. Step 5: Solve for x
    x = 329,939,532,316,961.25/20,710,785.60
  6. Step 6: Final answer
    x = 15,930,807.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.