Home / 10,938.08-15,089.29-7,159.58

Finding the Fourth Proportional to 10,938.08, 15,089.29 and 7,159.58

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Solution

The fourth proportional to 10,938.08, 15,089.29 and 7,159.58 is: 9,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.08 : 15,089.29 = 7,159.58 : x
  2. Step 2: Convert to fraction form
    10,938.08/15,089.29 = 7,159.58/x
  3. Step 3: Cross multiply
    10,938.08x = 15,089.29 × 7,159.58
  4. Step 4: Simplify right side
    10,938.08x = 108,032,867.65
  5. Step 5: Solve for x
    x = 108,032,867.65/10,938.08
  6. Step 6: Final answer
    x = 9,876.77

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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.