Home / 21,081,605.20-31,575,168.60-10,972,416.40

Finding the Fourth Proportional to 21,081,605.20, 31,575,168.60 and 10,972,416.40

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Solution

The fourth proportional to 21,081,605.20, 31,575,168.60 and 10,972,416.40 is: 16,434,037.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081,605.20 : 31,575,168.60 = 10,972,416.40 : x
  2. Step 2: Convert to fraction form
    21,081,605.20/31,575,168.60 = 10,972,416.40/x
  3. Step 3: Cross multiply
    21,081,605.20x = 31,575,168.60 × 10,972,416.40
  4. Step 4: Simplify right side
    21,081,605.20x = 346,455,897,779,405.06
  5. Step 5: Solve for x
    x = 346,455,897,779,405.06/21,081,605.20
  6. Step 6: Final answer
    x = 16,434,037.85

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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.