Home / 15,225.39-21,009.02-8,510.18

Finding the Fourth Proportional to 15,225.39, 21,009.02 and 8,510.18

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Solution

The fourth proportional to 15,225.39, 21,009.02 and 8,510.18 is: 11,742.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.39 : 21,009.02 = 8,510.18 : x
  2. Step 2: Convert to fraction form
    15,225.39/21,009.02 = 8,510.18/x
  3. Step 3: Cross multiply
    15,225.39x = 21,009.02 × 8,510.18
  4. Step 4: Simplify right side
    15,225.39x = 178,790,394.23
  5. Step 5: Solve for x
    x = 178,790,394.23/15,225.39
  6. Step 6: Final answer
    x = 11,742.91

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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.