Home / 21,007.04-31,494.88-9,158.56

Finding the Fourth Proportional to 21,007.04, 31,494.88 and 9,158.56

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Solution

The fourth proportional to 21,007.04, 31,494.88 and 9,158.56 is: 13,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.04 : 31,494.88 = 9,158.56 : x
  2. Step 2: Convert to fraction form
    21,007.04/31,494.88 = 9,158.56/x
  3. Step 3: Cross multiply
    21,007.04x = 31,494.88 × 9,158.56
  4. Step 4: Simplify right side
    21,007.04x = 288,447,717.95
  5. Step 5: Solve for x
    x = 288,447,717.95/21,007.04
  6. Step 6: Final answer
    x = 13,731.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.