Home / 15,989.40-22,070.88-9,619.56

Finding the Fourth Proportional to 15,989.40, 22,070.88 and 9,619.56

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Solution

The fourth proportional to 15,989.40, 22,070.88 and 9,619.56 is: 13,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.40 : 22,070.88 = 9,619.56 : x
  2. Step 2: Convert to fraction form
    15,989.40/22,070.88 = 9,619.56/x
  3. Step 3: Cross multiply
    15,989.40x = 22,070.88 × 9,619.56
  4. Step 4: Simplify right side
    15,989.40x = 212,312,154.41
  5. Step 5: Solve for x
    x = 212,312,154.41/15,989.40
  6. Step 6: Final answer
    x = 13,278.31

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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.