Home / 28,292.68-42,437.80-8,570.40

Finding the Fourth Proportional to 28,292.68, 42,437.80 and 8,570.40

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Solution

The fourth proportional to 28,292.68, 42,437.80 and 8,570.40 is: 12,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.68 : 42,437.80 = 8,570.40 : x
  2. Step 2: Convert to fraction form
    28,292.68/42,437.80 = 8,570.40/x
  3. Step 3: Cross multiply
    28,292.68x = 42,437.80 × 8,570.40
  4. Step 4: Simplify right side
    28,292.68x = 363,708,921.12
  5. Step 5: Solve for x
    x = 363,708,921.12/28,292.68
  6. Step 6: Final answer
    x = 12,855.23

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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.