Home / 28,155.90-38,854.52-15,409.04

Finding the Fourth Proportional to 28,155.90, 38,854.52 and 15,409.04

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Solution

The fourth proportional to 28,155.90, 38,854.52 and 15,409.04 is: 21,264.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.90 : 38,854.52 = 15,409.04 : x
  2. Step 2: Convert to fraction form
    28,155.90/38,854.52 = 15,409.04/x
  3. Step 3: Cross multiply
    28,155.90x = 38,854.52 × 15,409.04
  4. Step 4: Simplify right side
    28,155.90x = 598,710,852.86
  5. Step 5: Solve for x
    x = 598,710,852.86/28,155.90
  6. Step 6: Final answer
    x = 21,264.13

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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.