Home / 15,328.24-21,152.95-8,959.21

Finding the Fourth Proportional to 15,328.24, 21,152.95 and 8,959.21

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Solution

The fourth proportional to 15,328.24, 21,152.95 and 8,959.21 is: 12,363.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.24 : 21,152.95 = 8,959.21 : x
  2. Step 2: Convert to fraction form
    15,328.24/21,152.95 = 8,959.21/x
  3. Step 3: Cross multiply
    15,328.24x = 21,152.95 × 8,959.21
  4. Step 4: Simplify right side
    15,328.24x = 189,513,721.17
  5. Step 5: Solve for x
    x = 189,513,721.17/15,328.24
  6. Step 6: Final answer
    x = 12,363.70

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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.