Home / 43,012.10-64,518.12-13,432.47

Finding the Fourth Proportional to 43,012.10, 64,518.12 and 13,432.47

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Solution

The fourth proportional to 43,012.10, 64,518.12 and 13,432.47 is: 20,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,012.10 : 64,518.12 = 13,432.47 : x
  2. Step 2: Convert to fraction form
    43,012.10/64,518.12 = 13,432.47/x
  3. Step 3: Cross multiply
    43,012.10x = 64,518.12 × 13,432.47
  4. Step 4: Simplify right side
    43,012.10x = 866,637,711.36
  5. Step 5: Solve for x
    x = 866,637,711.36/43,012.10
  6. Step 6: Final answer
    x = 20,148.70

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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.