Home / 21,320.16-29,424.60-15,371.52

Finding the Fourth Proportional to 21,320.16, 29,424.60 and 15,371.52

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Solution

The fourth proportional to 21,320.16, 29,424.60 and 15,371.52 is: 21,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.16 : 29,424.60 = 15,371.52 : x
  2. Step 2: Convert to fraction form
    21,320.16/29,424.60 = 15,371.52/x
  3. Step 3: Cross multiply
    21,320.16x = 29,424.60 × 15,371.52
  4. Step 4: Simplify right side
    21,320.16x = 452,300,827.39
  5. Step 5: Solve for x
    x = 452,300,827.39/21,320.16
  6. Step 6: Final answer
    x = 21,214.70

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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.