Home / 15,154.89-20,914.40-8,440.52

Finding the Fourth Proportional to 15,154.89, 20,914.40 and 8,440.52

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Solution

The fourth proportional to 15,154.89, 20,914.40 and 8,440.52 is: 11,648.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.89 : 20,914.40 = 8,440.52 : x
  2. Step 2: Convert to fraction form
    15,154.89/20,914.40 = 8,440.52/x
  3. Step 3: Cross multiply
    15,154.89x = 20,914.40 × 8,440.52
  4. Step 4: Simplify right side
    15,154.89x = 176,528,411.49
  5. Step 5: Solve for x
    x = 176,528,411.49/15,154.89
  6. Step 6: Final answer
    x = 11,648.28

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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.