Home / 29,280.18-40,406.79-15,851.45

Finding the Fourth Proportional to 29,280.18, 40,406.79 and 15,851.45

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Solution

The fourth proportional to 29,280.18, 40,406.79 and 15,851.45 is: 21,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280.18 : 40,406.79 = 15,851.45 : x
  2. Step 2: Convert to fraction form
    29,280.18/40,406.79 = 15,851.45/x
  3. Step 3: Cross multiply
    29,280.18x = 40,406.79 × 15,851.45
  4. Step 4: Simplify right side
    29,280.18x = 640,506,211.35
  5. Step 5: Solve for x
    x = 640,506,211.35/29,280.18
  6. Step 6: Final answer
    x = 21,875.08

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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.