Home / 13,547.76-20,423.18-12,644.62

Finding the Fourth Proportional to 13,547.76, 20,423.18 and 12,644.62

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Solution

The fourth proportional to 13,547.76, 20,423.18 and 12,644.62 is: 19,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.76 : 20,423.18 = 12,644.62 : x
  2. Step 2: Convert to fraction form
    13,547.76/20,423.18 = 12,644.62/x
  3. Step 3: Cross multiply
    13,547.76x = 20,423.18 × 12,644.62
  4. Step 4: Simplify right side
    13,547.76x = 258,243,350.29
  5. Step 5: Solve for x
    x = 258,243,350.29/13,547.76
  6. Step 6: Final answer
    x = 19,061.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.