Home / 15,543.98-21,450.70-8,470.41

Finding the Fourth Proportional to 15,543.98, 21,450.70 and 8,470.41

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Solution

The fourth proportional to 15,543.98, 21,450.70 and 8,470.41 is: 11,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.98 : 21,450.70 = 8,470.41 : x
  2. Step 2: Convert to fraction form
    15,543.98/21,450.70 = 8,470.41/x
  3. Step 3: Cross multiply
    15,543.98x = 21,450.70 × 8,470.41
  4. Step 4: Simplify right side
    15,543.98x = 181,696,223.79
  5. Step 5: Solve for x
    x = 181,696,223.79/15,543.98
  6. Step 6: Final answer
    x = 11,689.17

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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.