Home / 27,700.79-38,225.12-21,746.68

Finding the Fourth Proportional to 27,700.79, 38,225.12 and 21,746.68

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Solution

The fourth proportional to 27,700.79, 38,225.12 and 21,746.68 is: 30,008.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,700.79 : 38,225.12 = 21,746.68 : x
  2. Step 2: Convert to fraction form
    27,700.79/38,225.12 = 21,746.68/x
  3. Step 3: Cross multiply
    27,700.79x = 38,225.12 × 21,746.68
  4. Step 4: Simplify right side
    27,700.79x = 831,269,248.31
  5. Step 5: Solve for x
    x = 831,269,248.31/27,700.79
  6. Step 6: Final answer
    x = 30,008.87

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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.