Home / 21,200.65-29,258.28-12,248.53

Finding the Fourth Proportional to 21,200.65, 29,258.28 and 12,248.53

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Solution

The fourth proportional to 21,200.65, 29,258.28 and 12,248.53 is: 16,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.65 : 29,258.28 = 12,248.53 : x
  2. Step 2: Convert to fraction form
    21,200.65/29,258.28 = 12,248.53/x
  3. Step 3: Cross multiply
    21,200.65x = 29,258.28 × 12,248.53
  4. Step 4: Simplify right side
    21,200.65x = 358,370,920.33
  5. Step 5: Solve for x
    x = 358,370,920.33/21,200.65
  6. Step 6: Final answer
    x = 16,903.77

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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.