Home / 28,312.02-42,468.03-12,711.42

Finding the Fourth Proportional to 28,312.02, 42,468.03 and 12,711.42

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Solution

The fourth proportional to 28,312.02, 42,468.03 and 12,711.42 is: 19,067.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.02 : 42,468.03 = 12,711.42 : x
  2. Step 2: Convert to fraction form
    28,312.02/42,468.03 = 12,711.42/x
  3. Step 3: Cross multiply
    28,312.02x = 42,468.03 × 12,711.42
  4. Step 4: Simplify right side
    28,312.02x = 539,828,965.90
  5. Step 5: Solve for x
    x = 539,828,965.90/28,312.02
  6. Step 6: Final answer
    x = 19,067.13

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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.