Home / 13,278.52-18,312.54-10,479.16

Finding the Fourth Proportional to 13,278.52, 18,312.54 and 10,479.16

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Solution

The fourth proportional to 13,278.52, 18,312.54 and 10,479.16 is: 14,451.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.52 : 18,312.54 = 10,479.16 : x
  2. Step 2: Convert to fraction form
    13,278.52/18,312.54 = 10,479.16/x
  3. Step 3: Cross multiply
    13,278.52x = 18,312.54 × 10,479.16
  4. Step 4: Simplify right side
    13,278.52x = 191,900,036.67
  5. Step 5: Solve for x
    x = 191,900,036.67/13,278.52
  6. Step 6: Final answer
    x = 14,451.91

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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.