Home / 10,889.48-15,017.28-7,108.40

Finding the Fourth Proportional to 10,889.48, 15,017.28 and 7,108.40

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Solution

The fourth proportional to 10,889.48, 15,017.28 and 7,108.40 is: 9,802.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.48 : 15,017.28 = 7,108.40 : x
  2. Step 2: Convert to fraction form
    10,889.48/15,017.28 = 7,108.40/x
  3. Step 3: Cross multiply
    10,889.48x = 15,017.28 × 7,108.40
  4. Step 4: Simplify right side
    10,889.48x = 106,748,833.15
  5. Step 5: Solve for x
    x = 106,748,833.15/10,889.48
  6. Step 6: Final answer
    x = 9,802.93

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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.