Home / 10,890,045.60-16,335,068.40-8,339,128.80

Finding the Fourth Proportional to 10,890,045.60, 16,335,068.40 and 8,339,128.80

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Solution

The fourth proportional to 10,890,045.60, 16,335,068.40 and 8,339,128.80 is: 12,508,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,045.60 : 16,335,068.40 = 8,339,128.80 : x
  2. Step 2: Convert to fraction form
    10,890,045.60/16,335,068.40 = 8,339,128.80/x
  3. Step 3: Cross multiply
    10,890,045.60x = 16,335,068.40 × 8,339,128.80
  4. Step 4: Simplify right side
    10,890,045.60x = 136,220,239,344,409.92
  5. Step 5: Solve for x
    x = 136,220,239,344,409.92/10,890,045.60
  6. Step 6: Final answer
    x = 12,508,693.20

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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.