Home / 18,972.04-28,459.62-4,931.92

Finding the Fourth Proportional to 18,972.04, 28,459.62 and 4,931.92

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Solution

The fourth proportional to 18,972.04, 28,459.62 and 4,931.92 is: 7,398.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.04 : 28,459.62 = 4,931.92 : x
  2. Step 2: Convert to fraction form
    18,972.04/28,459.62 = 4,931.92/x
  3. Step 3: Cross multiply
    18,972.04x = 28,459.62 × 4,931.92
  4. Step 4: Simplify right side
    18,972.04x = 140,360,569.07
  5. Step 5: Solve for x
    x = 140,360,569.07/18,972.04
  6. Step 6: Final answer
    x = 7,398.29

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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.