Home / 15,781.06-21,770.05-10,326.93

Finding the Fourth Proportional to 15,781.06, 21,770.05 and 10,326.93

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Solution

The fourth proportional to 15,781.06, 21,770.05 and 10,326.93 is: 14,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.06 : 21,770.05 = 10,326.93 : x
  2. Step 2: Convert to fraction form
    15,781.06/21,770.05 = 10,326.93/x
  3. Step 3: Cross multiply
    15,781.06x = 21,770.05 × 10,326.93
  4. Step 4: Simplify right side
    15,781.06x = 224,817,782.45
  5. Step 5: Solve for x
    x = 224,817,782.45/15,781.06
  6. Step 6: Final answer
    x = 14,246.05

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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.