Home / 15,471.18-21,349.66-8,397.45

Finding the Fourth Proportional to 15,471.18, 21,349.66 and 8,397.45

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Solution

The fourth proportional to 15,471.18, 21,349.66 and 8,397.45 is: 11,588.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.18 : 21,349.66 = 8,397.45 : x
  2. Step 2: Convert to fraction form
    15,471.18/21,349.66 = 8,397.45/x
  3. Step 3: Cross multiply
    15,471.18x = 21,349.66 × 8,397.45
  4. Step 4: Simplify right side
    15,471.18x = 179,282,702.37
  5. Step 5: Solve for x
    x = 179,282,702.37/15,471.18
  6. Step 6: Final answer
    x = 11,588.17

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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.