Home / 10,215.60-15,323.40-9,812.40

Finding the Fourth Proportional to 10,215.60, 15,323.40 and 9,812.40

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Solution

The fourth proportional to 10,215.60, 15,323.40 and 9,812.40 is: 14,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.60 : 15,323.40 = 9,812.40 : x
  2. Step 2: Convert to fraction form
    10,215.60/15,323.40 = 9,812.40/x
  3. Step 3: Cross multiply
    10,215.60x = 15,323.40 × 9,812.40
  4. Step 4: Simplify right side
    10,215.60x = 150,359,330.16
  5. Step 5: Solve for x
    x = 150,359,330.16/10,215.60
  6. Step 6: Final answer
    x = 14,718.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.