Home / 28,389.38-42,577.32-12,585.74

Finding the Fourth Proportional to 28,389.38, 42,577.32 and 12,585.74

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Solution

The fourth proportional to 28,389.38, 42,577.32 and 12,585.74 is: 18,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.38 : 42,577.32 = 12,585.74 : x
  2. Step 2: Convert to fraction form
    28,389.38/42,577.32 = 12,585.74/x
  3. Step 3: Cross multiply
    28,389.38x = 42,577.32 × 12,585.74
  4. Step 4: Simplify right side
    28,389.38x = 535,867,079.42
  5. Step 5: Solve for x
    x = 535,867,079.42/28,389.38
  6. Step 6: Final answer
    x = 18,875.62

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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.