Home / 28,547.64-42,821.78-12,753.47

Finding the Fourth Proportional to 28,547.64, 42,821.78 and 12,753.47

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Solution

The fourth proportional to 28,547.64, 42,821.78 and 12,753.47 is: 19,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.64 : 42,821.78 = 12,753.47 : x
  2. Step 2: Convert to fraction form
    28,547.64/42,821.78 = 12,753.47/x
  3. Step 3: Cross multiply
    28,547.64x = 42,821.78 × 12,753.47
  4. Step 4: Simplify right side
    28,547.64x = 546,126,329.86
  5. Step 5: Solve for x
    x = 546,126,329.86/28,547.64
  6. Step 6: Final answer
    x = 19,130.35

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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.