Home / 15,150.90-20,898.48-9,780.18

Finding the Fourth Proportional to 15,150.90, 20,898.48 and 9,780.18

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Solution

The fourth proportional to 15,150.90, 20,898.48 and 9,780.18 is: 13,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.90 : 20,898.48 = 9,780.18 : x
  2. Step 2: Convert to fraction form
    15,150.90/20,898.48 = 9,780.18/x
  3. Step 3: Cross multiply
    15,150.90x = 20,898.48 × 9,780.18
  4. Step 4: Simplify right side
    15,150.90x = 204,390,896.13
  5. Step 5: Solve for x
    x = 204,390,896.13/15,150.90
  6. Step 6: Final answer
    x = 13,490.35

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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.