Home / 15,330.24-21,156.27-8,955.93

Finding the Fourth Proportional to 15,330.24, 21,156.27 and 8,955.93

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Solution

The fourth proportional to 15,330.24, 21,156.27 and 8,955.93 is: 12,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.24 : 21,156.27 = 8,955.93 : x
  2. Step 2: Convert to fraction form
    15,330.24/21,156.27 = 8,955.93/x
  3. Step 3: Cross multiply
    15,330.24x = 21,156.27 × 8,955.93
  4. Step 4: Simplify right side
    15,330.24x = 189,474,073.18
  5. Step 5: Solve for x
    x = 189,474,073.18/15,330.24
  6. Step 6: Final answer
    x = 12,359.50

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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.