Home / 42,968.64-64,452.98-13,386.47

Finding the Fourth Proportional to 42,968.64, 64,452.98 and 13,386.47

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Solution

The fourth proportional to 42,968.64, 64,452.98 and 13,386.47 is: 20,079.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,968.64 : 64,452.98 = 13,386.47 : x
  2. Step 2: Convert to fraction form
    42,968.64/64,452.98 = 13,386.47/x
  3. Step 3: Cross multiply
    42,968.64x = 64,452.98 × 13,386.47
  4. Step 4: Simplify right side
    42,968.64x = 862,797,594.38
  5. Step 5: Solve for x
    x = 862,797,594.38/42,968.64
  6. Step 6: Final answer
    x = 20,079.70

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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.