Home / 15,875.30-21,908.18-8,705.07

Finding the Fourth Proportional to 15,875.30, 21,908.18 and 8,705.07

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Solution

The fourth proportional to 15,875.30, 21,908.18 and 8,705.07 is: 12,013.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.30 : 21,908.18 = 8,705.07 : x
  2. Step 2: Convert to fraction form
    15,875.30/21,908.18 = 8,705.07/x
  3. Step 3: Cross multiply
    15,875.30x = 21,908.18 × 8,705.07
  4. Step 4: Simplify right side
    15,875.30x = 190,712,240.47
  5. Step 5: Solve for x
    x = 190,712,240.47/15,875.30
  6. Step 6: Final answer
    x = 12,013.14

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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.