Home / 22,749.47-31,424.88-20,627.40

Finding the Fourth Proportional to 22,749.47, 31,424.88 and 20,627.40

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Solution

The fourth proportional to 22,749.47, 31,424.88 and 20,627.40 is: 28,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,749.47 : 31,424.88 = 20,627.40 : x
  2. Step 2: Convert to fraction form
    22,749.47/31,424.88 = 20,627.40/x
  3. Step 3: Cross multiply
    22,749.47x = 31,424.88 × 20,627.40
  4. Step 4: Simplify right side
    22,749.47x = 648,213,569.71
  5. Step 5: Solve for x
    x = 648,213,569.71/22,749.47
  6. Step 6: Final answer
    x = 28,493.57

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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.