Home / 15,639.60-21,581.48-8,925.04

Finding the Fourth Proportional to 15,639.60, 21,581.48 and 8,925.04

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Solution

The fourth proportional to 15,639.60, 21,581.48 and 8,925.04 is: 12,315.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.60 : 21,581.48 = 8,925.04 : x
  2. Step 2: Convert to fraction form
    15,639.60/21,581.48 = 8,925.04/x
  3. Step 3: Cross multiply
    15,639.60x = 21,581.48 × 8,925.04
  4. Step 4: Simplify right side
    15,639.60x = 192,615,572.26
  5. Step 5: Solve for x
    x = 192,615,572.26/15,639.60
  6. Step 6: Final answer
    x = 12,315.89

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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.