Home / 42,706.20-64,068.90-13,125.40

Finding the Fourth Proportional to 42,706.20, 64,068.90 and 13,125.40

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Solution

The fourth proportional to 42,706.20, 64,068.90 and 13,125.40 is: 19,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,706.20 : 64,068.90 = 13,125.40 : x
  2. Step 2: Convert to fraction form
    42,706.20/64,068.90 = 13,125.40/x
  3. Step 3: Cross multiply
    42,706.20x = 64,068.90 × 13,125.40
  4. Step 4: Simplify right side
    42,706.20x = 840,929,940.06
  5. Step 5: Solve for x
    x = 840,929,940.06/42,706.20
  6. Step 6: Final answer
    x = 19,691.05

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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.