Home / 15,386.91-21,239.19-9,570.65

Finding the Fourth Proportional to 15,386.91, 21,239.19 and 9,570.65

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Solution

The fourth proportional to 15,386.91, 21,239.19 and 9,570.65 is: 13,210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.91 : 21,239.19 = 9,570.65 : x
  2. Step 2: Convert to fraction form
    15,386.91/21,239.19 = 9,570.65/x
  3. Step 3: Cross multiply
    15,386.91x = 21,239.19 × 9,570.65
  4. Step 4: Simplify right side
    15,386.91x = 203,272,747.58
  5. Step 5: Solve for x
    x = 203,272,747.58/15,386.91
  6. Step 6: Final answer
    x = 13,210.76

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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.