Home / 15,423.24-21,283.60-8,708.76

Finding the Fourth Proportional to 15,423.24, 21,283.60 and 8,708.76

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Solution

The fourth proportional to 15,423.24, 21,283.60 and 8,708.76 is: 12,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.24 : 21,283.60 = 8,708.76 : x
  2. Step 2: Convert to fraction form
    15,423.24/21,283.60 = 8,708.76/x
  3. Step 3: Cross multiply
    15,423.24x = 21,283.60 × 8,708.76
  4. Step 4: Simplify right side
    15,423.24x = 185,353,764.34
  5. Step 5: Solve for x
    x = 185,353,764.34/15,423.24
  6. Step 6: Final answer
    x = 12,017.82

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Half scale
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Double scale
Find fourth proportional to 15,424.24, 21,284.98 and 8,709.76
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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.