Home / 15,331.77-21,159.80-9,362.18

Finding the Fourth Proportional to 15,331.77, 21,159.80 and 9,362.18

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Solution

The fourth proportional to 15,331.77, 21,159.80 and 9,362.18 is: 12,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.77 : 21,159.80 = 9,362.18 : x
  2. Step 2: Convert to fraction form
    15,331.77/21,159.80 = 9,362.18/x
  3. Step 3: Cross multiply
    15,331.77x = 21,159.80 × 9,362.18
  4. Step 4: Simplify right side
    15,331.77x = 198,101,897.56
  5. Step 5: Solve for x
    x = 198,101,897.56/15,331.77
  6. Step 6: Final answer
    x = 12,921.01

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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.