Home / 28,006.06-38,649.08-15,430.82

Finding the Fourth Proportional to 28,006.06, 38,649.08 and 15,430.82

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Solution

The fourth proportional to 28,006.06, 38,649.08 and 15,430.82 is: 21,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.06 : 38,649.08 = 15,430.82 : x
  2. Step 2: Convert to fraction form
    28,006.06/38,649.08 = 15,430.82/x
  3. Step 3: Cross multiply
    28,006.06x = 38,649.08 × 15,430.82
  4. Step 4: Simplify right side
    28,006.06x = 596,386,996.65
  5. Step 5: Solve for x
    x = 596,386,996.65/28,006.06
  6. Step 6: Final answer
    x = 21,294.93

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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.