Home / 18,830.12-28,249.74-5,681.70

Finding the Fourth Proportional to 18,830.12, 28,249.74 and 5,681.70

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Solution

The fourth proportional to 18,830.12, 28,249.74 and 5,681.70 is: 8,523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.12 : 28,249.74 = 5,681.70 : x
  2. Step 2: Convert to fraction form
    18,830.12/28,249.74 = 5,681.70/x
  3. Step 3: Cross multiply
    18,830.12x = 28,249.74 × 5,681.70
  4. Step 4: Simplify right side
    18,830.12x = 160,506,547.76
  5. Step 5: Solve for x
    x = 160,506,547.76/18,830.12
  6. Step 6: Final answer
    x = 8,523.93

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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.