Home / 15,875.32-21,908.10-8,802.40

Finding the Fourth Proportional to 15,875.32, 21,908.10 and 8,802.40

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Solution

The fourth proportional to 15,875.32, 21,908.10 and 8,802.40 is: 12,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.32 : 21,908.10 = 8,802.40 : x
  2. Step 2: Convert to fraction form
    15,875.32/21,908.10 = 8,802.40/x
  3. Step 3: Cross multiply
    15,875.32x = 21,908.10 × 8,802.40
  4. Step 4: Simplify right side
    15,875.32x = 192,843,859.44
  5. Step 5: Solve for x
    x = 192,843,859.44/15,875.32
  6. Step 6: Final answer
    x = 12,147.40

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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.