Home / 10,143.89-15,216.51-3,123.47

Finding the Fourth Proportional to 10,143.89, 15,216.51 and 3,123.47

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Solution

The fourth proportional to 10,143.89, 15,216.51 and 3,123.47 is: 4,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.89 : 15,216.51 = 3,123.47 : x
  2. Step 2: Convert to fraction form
    10,143.89/15,216.51 = 3,123.47/x
  3. Step 3: Cross multiply
    10,143.89x = 15,216.51 × 3,123.47
  4. Step 4: Simplify right side
    10,143.89x = 47,528,312.49
  5. Step 5: Solve for x
    x = 47,528,312.49/10,143.89
  6. Step 6: Final answer
    x = 4,685.41

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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.