Home / 15,117.95-22,679.27-7,718.40

Finding the Fourth Proportional to 15,117.95, 22,679.27 and 7,718.40

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Solution

The fourth proportional to 15,117.95, 22,679.27 and 7,718.40 is: 11,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.95 : 22,679.27 = 7,718.40 : x
  2. Step 2: Convert to fraction form
    15,117.95/22,679.27 = 7,718.40/x
  3. Step 3: Cross multiply
    15,117.95x = 22,679.27 × 7,718.40
  4. Step 4: Simplify right side
    15,117.95x = 175,047,638.98
  5. Step 5: Solve for x
    x = 175,047,638.98/15,117.95
  6. Step 6: Final answer
    x = 11,578.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.