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Finding the Fourth Proportional to 18,870.68, 28,319.62 and 7,026.10

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Solution

The fourth proportional to 18,870.68, 28,319.62 and 7,026.10 is: 10,544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.68 : 28,319.62 = 7,026.10 : x
  2. Step 2: Convert to fraction form
    18,870.68/28,319.62 = 7,026.10/x
  3. Step 3: Cross multiply
    18,870.68x = 28,319.62 × 7,026.10
  4. Step 4: Simplify right side
    18,870.68x = 198,976,482.08
  5. Step 5: Solve for x
    x = 198,976,482.08/18,870.68
  6. Step 6: Final answer
    x = 10,544.21

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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.