Home / 12,510.40-18,769.28-7,511.52

Finding the Fourth Proportional to 12,510.40, 18,769.28 and 7,511.52

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Solution

The fourth proportional to 12,510.40, 18,769.28 and 7,511.52 is: 11,269.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.40 : 18,769.28 = 7,511.52 : x
  2. Step 2: Convert to fraction form
    12,510.40/18,769.28 = 7,511.52/x
  3. Step 3: Cross multiply
    12,510.40x = 18,769.28 × 7,511.52
  4. Step 4: Simplify right side
    12,510.40x = 140,985,822.11
  5. Step 5: Solve for x
    x = 140,985,822.11/12,510.40
  6. Step 6: Final answer
    x = 11,269.49

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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.