Home / 42,215.08-63,280.86-19,989.40

Finding the Fourth Proportional to 42,215.08, 63,280.86 and 19,989.40

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Solution

The fourth proportional to 42,215.08, 63,280.86 and 19,989.40 is: 29,964.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,215.08 : 63,280.86 = 19,989.40 : x
  2. Step 2: Convert to fraction form
    42,215.08/63,280.86 = 19,989.40/x
  3. Step 3: Cross multiply
    42,215.08x = 63,280.86 × 19,989.40
  4. Step 4: Simplify right side
    42,215.08x = 1,264,946,422.88
  5. Step 5: Solve for x
    x = 1,264,946,422.88/42,215.08
  6. Step 6: Final answer
    x = 29,964.33

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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.