Home / 39,395.61-54,366.12-21,490.56

Finding the Fourth Proportional to 39,395.61, 54,366.12 and 21,490.56

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Solution

The fourth proportional to 39,395.61, 54,366.12 and 21,490.56 is: 29,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.61 : 54,366.12 = 21,490.56 : x
  2. Step 2: Convert to fraction form
    39,395.61/54,366.12 = 21,490.56/x
  3. Step 3: Cross multiply
    39,395.61x = 54,366.12 × 21,490.56
  4. Step 4: Simplify right side
    39,395.61x = 1,168,358,363.83
  5. Step 5: Solve for x
    x = 1,168,358,363.83/39,395.61
  6. Step 6: Final answer
    x = 29,657.07

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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.