Home / 13,545.03-20,320.79-6,864.87

Finding the Fourth Proportional to 13,545.03, 20,320.79 and 6,864.87

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Solution

The fourth proportional to 13,545.03, 20,320.79 and 6,864.87 is: 10,298.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.03 : 20,320.79 = 6,864.87 : x
  2. Step 2: Convert to fraction form
    13,545.03/20,320.79 = 6,864.87/x
  3. Step 3: Cross multiply
    13,545.03x = 20,320.79 × 6,864.87
  4. Step 4: Simplify right side
    13,545.03x = 139,499,547.32
  5. Step 5: Solve for x
    x = 139,499,547.32/13,545.03
  6. Step 6: Final answer
    x = 10,298.95

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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.