Home / 28,125.28-38,810.28-15,549.76

Finding the Fourth Proportional to 28,125.28, 38,810.28 and 15,549.76

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Solution

The fourth proportional to 28,125.28, 38,810.28 and 15,549.76 is: 21,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.28 : 38,810.28 = 15,549.76 : x
  2. Step 2: Convert to fraction form
    28,125.28/38,810.28 = 15,549.76/x
  3. Step 3: Cross multiply
    28,125.28x = 38,810.28 × 15,549.76
  4. Step 4: Simplify right side
    28,125.28x = 603,490,539.53
  5. Step 5: Solve for x
    x = 603,490,539.53/28,125.28
  6. Step 6: Final answer
    x = 21,457.23

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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.