Home / 42,643.20-63,964.80-14,937.60

Finding the Fourth Proportional to 42,643.20, 63,964.80 and 14,937.60

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Solution

The fourth proportional to 42,643.20, 63,964.80 and 14,937.60 is: 22,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,643.20 : 63,964.80 = 14,937.60 : x
  2. Step 2: Convert to fraction form
    42,643.20/63,964.80 = 14,937.60/x
  3. Step 3: Cross multiply
    42,643.20x = 63,964.80 × 14,937.60
  4. Step 4: Simplify right side
    42,643.20x = 955,480,596.48
  5. Step 5: Solve for x
    x = 955,480,596.48/42,643.20
  6. Step 6: Final answer
    x = 22,406.40

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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.