Home / 15,552.52-21,465.14-10,779.39

Finding the Fourth Proportional to 15,552.52, 21,465.14 and 10,779.39

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Solution

The fourth proportional to 15,552.52, 21,465.14 and 10,779.39 is: 14,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.52 : 21,465.14 = 10,779.39 : x
  2. Step 2: Convert to fraction form
    15,552.52/21,465.14 = 10,779.39/x
  3. Step 3: Cross multiply
    15,552.52x = 21,465.14 × 10,779.39
  4. Step 4: Simplify right side
    15,552.52x = 231,381,061.57
  5. Step 5: Solve for x
    x = 231,381,061.57/15,552.52
  6. Step 6: Final answer
    x = 14,877.40

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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.