Home / 28,248.50-38,982.90-15,501.76

Finding the Fourth Proportional to 28,248.50, 38,982.90 and 15,501.76

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Solution

The fourth proportional to 28,248.50, 38,982.90 and 15,501.76 is: 21,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,248.50 : 38,982.90 = 15,501.76 : x
  2. Step 2: Convert to fraction form
    28,248.50/38,982.90 = 15,501.76/x
  3. Step 3: Cross multiply
    28,248.50x = 38,982.90 × 15,501.76
  4. Step 4: Simplify right side
    28,248.50x = 604,303,559.90
  5. Step 5: Solve for x
    x = 604,303,559.90/28,248.50
  6. Step 6: Final answer
    x = 21,392.41

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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.