Home / 15,429.60-21,292.86-8,715.24

Finding the Fourth Proportional to 15,429.60, 21,292.86 and 8,715.24

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Solution

The fourth proportional to 15,429.60, 21,292.86 and 8,715.24 is: 12,027.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.60 : 21,292.86 = 8,715.24 : x
  2. Step 2: Convert to fraction form
    15,429.60/21,292.86 = 8,715.24/x
  3. Step 3: Cross multiply
    15,429.60x = 21,292.86 × 8,715.24
  4. Step 4: Simplify right side
    15,429.60x = 185,572,385.19
  5. Step 5: Solve for x
    x = 185,572,385.19/15,429.60
  6. Step 6: Final answer
    x = 12,027.04

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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.