Home / 15,644.43-21,572.01-9,970.19

Finding the Fourth Proportional to 15,644.43, 21,572.01 and 9,970.19

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Solution

The fourth proportional to 15,644.43, 21,572.01 and 9,970.19 is: 13,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.43 : 21,572.01 = 9,970.19 : x
  2. Step 2: Convert to fraction form
    15,644.43/21,572.01 = 9,970.19/x
  3. Step 3: Cross multiply
    15,644.43x = 21,572.01 × 9,970.19
  4. Step 4: Simplify right side
    15,644.43x = 215,077,117.24
  5. Step 5: Solve for x
    x = 215,077,117.24/15,644.43
  6. Step 6: Final answer
    x = 13,747.84

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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.