Home / 10,939.16-15,088.05-7,156.26

Finding the Fourth Proportional to 10,939.16, 15,088.05 and 7,156.26

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Solution

The fourth proportional to 10,939.16, 15,088.05 and 7,156.26 is: 9,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.16 : 15,088.05 = 7,156.26 : x
  2. Step 2: Convert to fraction form
    10,939.16/15,088.05 = 7,156.26/x
  3. Step 3: Cross multiply
    10,939.16x = 15,088.05 × 7,156.26
  4. Step 4: Simplify right side
    10,939.16x = 107,974,008.69
  5. Step 5: Solve for x
    x = 107,974,008.69/10,939.16
  6. Step 6: Final answer
    x = 9,870.41

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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.