Home / 13,385.18-18,471.33-7,417.19

Finding the Fourth Proportional to 13,385.18, 18,471.33 and 7,417.19

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Solution

The fourth proportional to 13,385.18, 18,471.33 and 7,417.19 is: 10,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.18 : 18,471.33 = 7,417.19 : x
  2. Step 2: Convert to fraction form
    13,385.18/18,471.33 = 7,417.19/x
  3. Step 3: Cross multiply
    13,385.18x = 18,471.33 × 7,417.19
  4. Step 4: Simplify right side
    13,385.18x = 137,005,271.81
  5. Step 5: Solve for x
    x = 137,005,271.81/13,385.18
  6. Step 6: Final answer
    x = 10,235.60

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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.