Home / 20,221,257.60-30,331,886.40-13,418,812.80

Finding the Fourth Proportional to 20,221,257.60, 30,331,886.40 and 13,418,812.80

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Solution

The fourth proportional to 20,221,257.60, 30,331,886.40 and 13,418,812.80 is: 20,128,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,257.60 : 30,331,886.40 = 13,418,812.80 : x
  2. Step 2: Convert to fraction form
    20,221,257.60/30,331,886.40 = 13,418,812.80/x
  3. Step 3: Cross multiply
    20,221,257.60x = 30,331,886.40 × 13,418,812.80
  4. Step 4: Simplify right side
    20,221,257.60x = 407,017,905,472,465.94
  5. Step 5: Solve for x
    x = 407,017,905,472,465.94/20,221,257.60
  6. Step 6: Final answer
    x = 20,128,219.20

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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.