Home / 13,547.31-18,697.86-9,078.86

Finding the Fourth Proportional to 13,547.31, 18,697.86 and 9,078.86

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Solution

The fourth proportional to 13,547.31, 18,697.86 and 9,078.86 is: 12,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.31 : 18,697.86 = 9,078.86 : x
  2. Step 2: Convert to fraction form
    13,547.31/18,697.86 = 9,078.86/x
  3. Step 3: Cross multiply
    13,547.31x = 18,697.86 × 9,078.86
  4. Step 4: Simplify right side
    13,547.31x = 169,755,159.75
  5. Step 5: Solve for x
    x = 169,755,159.75/13,547.31
  6. Step 6: Final answer
    x = 12,530.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.