Home / 28,312.32-42,468.80-8,590.72

Finding the Fourth Proportional to 28,312.32, 42,468.80 and 8,590.72

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Solution

The fourth proportional to 28,312.32, 42,468.80 and 8,590.72 is: 12,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.32 : 42,468.80 = 8,590.72 : x
  2. Step 2: Convert to fraction form
    28,312.32/42,468.80 = 8,590.72/x
  3. Step 3: Cross multiply
    28,312.32x = 42,468.80 × 8,590.72
  4. Step 4: Simplify right side
    28,312.32x = 364,837,569.54
  5. Step 5: Solve for x
    x = 364,837,569.54/28,312.32
  6. Step 6: Final answer
    x = 12,886.18

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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.