Home / 15,641.51-21,569.10-10,866.86

Finding the Fourth Proportional to 15,641.51, 21,569.10 and 10,866.86

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Solution

The fourth proportional to 15,641.51, 21,569.10 and 10,866.86 is: 14,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,641.51 : 21,569.10 = 10,866.86 : x
  2. Step 2: Convert to fraction form
    15,641.51/21,569.10 = 10,866.86/x
  3. Step 3: Cross multiply
    15,641.51x = 21,569.10 × 10,866.86
  4. Step 4: Simplify right side
    15,641.51x = 234,388,337.60
  5. Step 5: Solve for x
    x = 234,388,337.60/15,641.51
  6. Step 6: Final answer
    x = 14,985.02

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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.