Home / 13,210.74-18,228.51-7,542.90

Finding the Fourth Proportional to 13,210.74, 18,228.51 and 7,542.90

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Solution

The fourth proportional to 13,210.74, 18,228.51 and 7,542.90 is: 10,407.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.74 : 18,228.51 = 7,542.90 : x
  2. Step 2: Convert to fraction form
    13,210.74/18,228.51 = 7,542.90/x
  3. Step 3: Cross multiply
    13,210.74x = 18,228.51 × 7,542.90
  4. Step 4: Simplify right side
    13,210.74x = 137,495,828.08
  5. Step 5: Solve for x
    x = 137,495,828.08/13,210.74
  6. Step 6: Final answer
    x = 10,407.88

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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.