Home / 12,254.32-16,920.50-9,417.20

Finding the Fourth Proportional to 12,254.32, 16,920.50 and 9,417.20

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Solution

The fourth proportional to 12,254.32, 16,920.50 and 9,417.20 is: 13,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.32 : 16,920.50 = 9,417.20 : x
  2. Step 2: Convert to fraction form
    12,254.32/16,920.50 = 9,417.20/x
  3. Step 3: Cross multiply
    12,254.32x = 16,920.50 × 9,417.20
  4. Step 4: Simplify right side
    12,254.32x = 159,343,600.91
  5. Step 5: Solve for x
    x = 159,343,600.91/12,254.32
  6. Step 6: Final answer
    x = 13,003.05

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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.