Home / 15,385.95-21,232.61-8,312.37

Finding the Fourth Proportional to 15,385.95, 21,232.61 and 8,312.37

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Solution

The fourth proportional to 15,385.95, 21,232.61 and 8,312.37 is: 11,471.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.95 : 21,232.61 = 8,312.37 : x
  2. Step 2: Convert to fraction form
    15,385.95/21,232.61 = 8,312.37/x
  3. Step 3: Cross multiply
    15,385.95x = 21,232.61 × 8,312.37
  4. Step 4: Simplify right side
    15,385.95x = 176,493,316.43
  5. Step 5: Solve for x
    x = 176,493,316.43/15,385.95
  6. Step 6: Final answer
    x = 11,471.07

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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.