Home / 21,000,000.60-31,500,000.90-19,565,109.90

Finding the Fourth Proportional to 21,000,000.60, 31,500,000.90 and 19,565,109.90

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Solution

The fourth proportional to 21,000,000.60, 31,500,000.90 and 19,565,109.90 is: 29,347,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,000.60 : 31,500,000.90 = 19,565,109.90 : x
  2. Step 2: Convert to fraction form
    21,000,000.60/31,500,000.90 = 19,565,109.90/x
  3. Step 3: Cross multiply
    21,000,000.60x = 31,500,000.90 × 19,565,109.90
  4. Step 4: Simplify right side
    21,000,000.60x = 616,300,979,458,598.88
  5. Step 5: Solve for x
    x = 616,300,979,458,598.88/21,000,000.60
  6. Step 6: Final answer
    x = 29,347,664.85

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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.