Home / 21,312,959.60-31,969,439.40-13,660,209.20

Finding the Fourth Proportional to 21,312,959.60, 31,969,439.40 and 13,660,209.20

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Solution

The fourth proportional to 21,312,959.60, 31,969,439.40 and 13,660,209.20 is: 20,490,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,959.60 : 31,969,439.40 = 13,660,209.20 : x
  2. Step 2: Convert to fraction form
    21,312,959.60/31,969,439.40 = 13,660,209.20/x
  3. Step 3: Cross multiply
    21,312,959.60x = 31,969,439.40 × 13,660,209.20
  4. Step 4: Simplify right side
    21,312,959.60x = 436,709,230,210,722.44
  5. Step 5: Solve for x
    x = 436,709,230,210,722.44/21,312,959.60
  6. Step 6: Final answer
    x = 20,490,313.80

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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.