Home / 15,315.60-22,970.16-4,221.60

Finding the Fourth Proportional to 15,315.60, 22,970.16 and 4,221.60

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Solution

The fourth proportional to 15,315.60, 22,970.16 and 4,221.60 is: 6,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.60 : 22,970.16 = 4,221.60 : x
  2. Step 2: Convert to fraction form
    15,315.60/22,970.16 = 4,221.60/x
  3. Step 3: Cross multiply
    15,315.60x = 22,970.16 × 4,221.60
  4. Step 4: Simplify right side
    15,315.60x = 96,970,827.46
  5. Step 5: Solve for x
    x = 96,970,827.46/15,315.60
  6. Step 6: Final answer
    x = 6,331.51

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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.