Home / 28,059.18-38,720.46-15,312.04

Finding the Fourth Proportional to 28,059.18, 38,720.46 and 15,312.04

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Solution

The fourth proportional to 28,059.18, 38,720.46 and 15,312.04 is: 21,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.18 : 38,720.46 = 15,312.04 : x
  2. Step 2: Convert to fraction form
    28,059.18/38,720.46 = 15,312.04/x
  3. Step 3: Cross multiply
    28,059.18x = 38,720.46 × 15,312.04
  4. Step 4: Simplify right side
    28,059.18x = 592,889,223.32
  5. Step 5: Solve for x
    x = 592,889,223.32/28,059.18
  6. Step 6: Final answer
    x = 21,129.96

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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.