Home / 10,258.10-15,350.70-7,123.40

Finding the Fourth Proportional to 10,258.10, 15,350.70 and 7,123.40

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Solution

The fourth proportional to 10,258.10, 15,350.70 and 7,123.40 is: 10,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,258.10 : 15,350.70 = 7,123.40 : x
  2. Step 2: Convert to fraction form
    10,258.10/15,350.70 = 7,123.40/x
  3. Step 3: Cross multiply
    10,258.10x = 15,350.70 × 7,123.40
  4. Step 4: Simplify right side
    10,258.10x = 109,349,176.38
  5. Step 5: Solve for x
    x = 109,349,176.38/10,258.10
  6. Step 6: Final answer
    x = 10,659.79

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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.