Home / 12,547.60-18,795.88-8,151.76

Finding the Fourth Proportional to 12,547.60, 18,795.88 and 8,151.76

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Solution

The fourth proportional to 12,547.60, 18,795.88 and 8,151.76 is: 12,211.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.60 : 18,795.88 = 8,151.76 : x
  2. Step 2: Convert to fraction form
    12,547.60/18,795.88 = 8,151.76/x
  3. Step 3: Cross multiply
    12,547.60x = 18,795.88 × 8,151.76
  4. Step 4: Simplify right side
    12,547.60x = 153,219,502.75
  5. Step 5: Solve for x
    x = 153,219,502.75/12,547.60
  6. Step 6: Final answer
    x = 12,211.06

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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.