Home / 15,119.02-20,856.99-13,019.50

Finding the Fourth Proportional to 15,119.02, 20,856.99 and 13,019.50

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Solution

The fourth proportional to 15,119.02, 20,856.99 and 13,019.50 is: 17,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.02 : 20,856.99 = 13,019.50 : x
  2. Step 2: Convert to fraction form
    15,119.02/20,856.99 = 13,019.50/x
  3. Step 3: Cross multiply
    15,119.02x = 20,856.99 × 13,019.50
  4. Step 4: Simplify right side
    15,119.02x = 271,547,581.31
  5. Step 5: Solve for x
    x = 271,547,581.31/15,119.02
  6. Step 6: Final answer
    x = 17,960.66

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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.