Home / 21,875.36-32,774.16-12,515

Finding the Fourth Proportional to 21,875.36, 32,774.16 and 12,515

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Solution

The fourth proportional to 21,875.36, 32,774.16 and 12,515 is: 18,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.36 : 32,774.16 = 12,515 : x
  2. Step 2: Convert to fraction form
    21,875.36/32,774.16 = 12,515/x
  3. Step 3: Cross multiply
    21,875.36x = 32,774.16 × 12,515
  4. Step 4: Simplify right side
    21,875.36x = 410,168,612.40
  5. Step 5: Solve for x
    x = 410,168,612.40/21,875.36
  6. Step 6: Final answer
    x = 18,750.26

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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.