Home / 15,264.30-21,064.35-8,977.06

Finding the Fourth Proportional to 15,264.30, 21,064.35 and 8,977.06

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Solution

The fourth proportional to 15,264.30, 21,064.35 and 8,977.06 is: 12,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,264.30 : 21,064.35 = 8,977.06 : x
  2. Step 2: Convert to fraction form
    15,264.30/21,064.35 = 8,977.06/x
  3. Step 3: Cross multiply
    15,264.30x = 21,064.35 × 8,977.06
  4. Step 4: Simplify right side
    15,264.30x = 189,095,933.81
  5. Step 5: Solve for x
    x = 189,095,933.81/15,264.30
  6. Step 6: Final answer
    x = 12,388.12

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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.