Home / 28,515,708.60-42,742,070.10-15,745,378.20

Finding the Fourth Proportional to 28,515,708.60, 42,742,070.10 and 15,745,378.20

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Solution

The fourth proportional to 28,515,708.60, 42,742,070.10 and 15,745,378.20 is: 23,600,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515,708.60 : 42,742,070.10 = 15,745,378.20 : x
  2. Step 2: Convert to fraction form
    28,515,708.60/42,742,070.10 = 15,745,378.20/x
  3. Step 3: Cross multiply
    28,515,708.60x = 42,742,070.10 × 15,745,378.20
  4. Step 4: Simplify right side
    28,515,708.60x = 672,990,058,775,411.75
  5. Step 5: Solve for x
    x = 672,990,058,775,411.75/28,515,708.60
  6. Step 6: Final answer
    x = 23,600,678.08

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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.