Home / 13,248.61-18,278.55-8,210.99

Finding the Fourth Proportional to 13,248.61, 18,278.55 and 8,210.99

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Solution

The fourth proportional to 13,248.61, 18,278.55 and 8,210.99 is: 11,328.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,248.61 : 18,278.55 = 8,210.99 : x
  2. Step 2: Convert to fraction form
    13,248.61/18,278.55 = 8,210.99/x
  3. Step 3: Cross multiply
    13,248.61x = 18,278.55 × 8,210.99
  4. Step 4: Simplify right side
    13,248.61x = 150,084,995.79
  5. Step 5: Solve for x
    x = 150,084,995.79/13,248.61
  6. Step 6: Final answer
    x = 11,328.36

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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.