Home / 10,631.51-15,931.09-5,077.20

Finding the Fourth Proportional to 10,631.51, 15,931.09 and 5,077.20

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Solution

The fourth proportional to 10,631.51, 15,931.09 and 5,077.20 is: 7,608.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.51 : 15,931.09 = 5,077.20 : x
  2. Step 2: Convert to fraction form
    10,631.51/15,931.09 = 5,077.20/x
  3. Step 3: Cross multiply
    10,631.51x = 15,931.09 × 5,077.20
  4. Step 4: Simplify right side
    10,631.51x = 80,885,317.46
  5. Step 5: Solve for x
    x = 80,885,317.46/10,631.51
  6. Step 6: Final answer
    x = 7,608.08

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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.