Home / 34,152.08-47,134.40-20,721.20

Finding the Fourth Proportional to 34,152.08, 47,134.40 and 20,721.20

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Solution

The fourth proportional to 34,152.08, 47,134.40 and 20,721.20 is: 28,598.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,152.08 : 47,134.40 = 20,721.20 : x
  2. Step 2: Convert to fraction form
    34,152.08/47,134.40 = 20,721.20/x
  3. Step 3: Cross multiply
    34,152.08x = 47,134.40 × 20,721.20
  4. Step 4: Simplify right side
    34,152.08x = 976,681,329.28
  5. Step 5: Solve for x
    x = 976,681,329.28/34,152.08
  6. Step 6: Final answer
    x = 28,598.00

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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.