Home / 14,288.40-19,719.45-8,319.71

Finding the Fourth Proportional to 14,288.40, 19,719.45 and 8,319.71

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Solution

The fourth proportional to 14,288.40, 19,719.45 and 8,319.71 is: 11,482.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.40 : 19,719.45 = 8,319.71 : x
  2. Step 2: Convert to fraction form
    14,288.40/19,719.45 = 8,319.71/x
  3. Step 3: Cross multiply
    14,288.40x = 19,719.45 × 8,319.71
  4. Step 4: Simplify right side
    14,288.40x = 164,060,154.66
  5. Step 5: Solve for x
    x = 164,060,154.66/14,288.40
  6. Step 6: Final answer
    x = 11,482.05

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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.