Home / 13,439.95-18,547.14-7,471.63

Finding the Fourth Proportional to 13,439.95, 18,547.14 and 7,471.63

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Solution

The fourth proportional to 13,439.95, 18,547.14 and 7,471.63 is: 10,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.95 : 18,547.14 = 7,471.63 : x
  2. Step 2: Convert to fraction form
    13,439.95/18,547.14 = 7,471.63/x
  3. Step 3: Cross multiply
    13,439.95x = 18,547.14 × 7,471.63
  4. Step 4: Simplify right side
    13,439.95x = 138,577,367.64
  5. Step 5: Solve for x
    x = 138,577,367.64/13,439.95
  6. Step 6: Final answer
    x = 10,310.85

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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.