Home / 28,117.60-42,176.40-7,341.10

Finding the Fourth Proportional to 28,117.60, 42,176.40 and 7,341.10

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Solution

The fourth proportional to 28,117.60, 42,176.40 and 7,341.10 is: 11,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.60 : 42,176.40 = 7,341.10 : x
  2. Step 2: Convert to fraction form
    28,117.60/42,176.40 = 7,341.10/x
  3. Step 3: Cross multiply
    28,117.60x = 42,176.40 × 7,341.10
  4. Step 4: Simplify right side
    28,117.60x = 309,621,170.04
  5. Step 5: Solve for x
    x = 309,621,170.04/28,117.60
  6. Step 6: Final answer
    x = 11,011.65

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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.