Home / 10,875.62-15,010.51-7,099.40

Finding the Fourth Proportional to 10,875.62, 15,010.51 and 7,099.40

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Solution

The fourth proportional to 10,875.62, 15,010.51 and 7,099.40 is: 9,798.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,875.62 : 15,010.51 = 7,099.40 : x
  2. Step 2: Convert to fraction form
    10,875.62/15,010.51 = 7,099.40/x
  3. Step 3: Cross multiply
    10,875.62x = 15,010.51 × 7,099.40
  4. Step 4: Simplify right side
    10,875.62x = 106,565,521.89
  5. Step 5: Solve for x
    x = 106,565,521.89/10,875.62
  6. Step 6: Final answer
    x = 9,798.57

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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.