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Finding the Fourth Proportional to 28,412.16, 42,616.32 and 26,488.32

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Solution

The fourth proportional to 28,412.16, 42,616.32 and 26,488.32 is: 39,730.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,412.16 : 42,616.32 = 26,488.32 : x
  2. Step 2: Convert to fraction form
    28,412.16/42,616.32 = 26,488.32/x
  3. Step 3: Cross multiply
    28,412.16x = 42,616.32 × 26,488.32
  4. Step 4: Simplify right side
    28,412.16x = 1,128,834,721.38
  5. Step 5: Solve for x
    x = 1,128,834,721.38/28,412.16
  6. Step 6: Final answer
    x = 39,730.69

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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.