Home / 15,440.49-21,306.78-8,726.40

Finding the Fourth Proportional to 15,440.49, 21,306.78 and 8,726.40

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Solution

The fourth proportional to 15,440.49, 21,306.78 and 8,726.40 is: 12,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.49 : 21,306.78 = 8,726.40 : x
  2. Step 2: Convert to fraction form
    15,440.49/21,306.78 = 8,726.40/x
  3. Step 3: Cross multiply
    15,440.49x = 21,306.78 × 8,726.40
  4. Step 4: Simplify right side
    15,440.49x = 185,931,484.99
  5. Step 5: Solve for x
    x = 185,931,484.99/15,440.49
  6. Step 6: Final answer
    x = 12,041.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.