Home / 15,695.48-21,612.40-13,567.24

Finding the Fourth Proportional to 15,695.48, 21,612.40 and 13,567.24

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Solution

The fourth proportional to 15,695.48, 21,612.40 and 13,567.24 is: 18,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.48 : 21,612.40 = 13,567.24 : x
  2. Step 2: Convert to fraction form
    15,695.48/21,612.40 = 13,567.24/x
  3. Step 3: Cross multiply
    15,695.48x = 21,612.40 × 13,567.24
  4. Step 4: Simplify right side
    15,695.48x = 293,220,617.78
  5. Step 5: Solve for x
    x = 293,220,617.78/15,695.48
  6. Step 6: Final answer
    x = 18,681.85

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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.