Home / 28,492.10-42,746.78-20,188.18

Finding the Fourth Proportional to 28,492.10, 42,746.78 and 20,188.18

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Solution

The fourth proportional to 28,492.10, 42,746.78 and 20,188.18 is: 30,288.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.10 : 42,746.78 = 20,188.18 : x
  2. Step 2: Convert to fraction form
    28,492.10/42,746.78 = 20,188.18/x
  3. Step 3: Cross multiply
    28,492.10x = 42,746.78 × 20,188.18
  4. Step 4: Simplify right side
    28,492.10x = 862,979,689.06
  5. Step 5: Solve for x
    x = 862,979,689.06/28,492.10
  6. Step 6: Final answer
    x = 30,288.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.