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Finding the Fourth Proportional to 15,443.40, 23,159.70 and 8,045.40

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Solution

The fourth proportional to 15,443.40, 23,159.70 and 8,045.40 is: 12,065.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.40 : 23,159.70 = 8,045.40 : x
  2. Step 2: Convert to fraction form
    15,443.40/23,159.70 = 8,045.40/x
  3. Step 3: Cross multiply
    15,443.40x = 23,159.70 × 8,045.40
  4. Step 4: Simplify right side
    15,443.40x = 186,329,050.38
  5. Step 5: Solve for x
    x = 186,329,050.38/15,443.40
  6. Step 6: Final answer
    x = 12,065.29

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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.