Home / 15,352.05-21,188.37-9,689.88

Finding the Fourth Proportional to 15,352.05, 21,188.37 and 9,689.88

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Solution

The fourth proportional to 15,352.05, 21,188.37 and 9,689.88 is: 13,373.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,352.05 : 21,188.37 = 9,689.88 : x
  2. Step 2: Convert to fraction form
    15,352.05/21,188.37 = 9,689.88/x
  3. Step 3: Cross multiply
    15,352.05x = 21,188.37 × 9,689.88
  4. Step 4: Simplify right side
    15,352.05x = 205,312,762.70
  5. Step 5: Solve for x
    x = 205,312,762.70/15,352.05
  6. Step 6: Final answer
    x = 13,373.64

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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.