Home / 10,275.12-15,307.56-9,779.76

Finding the Fourth Proportional to 10,275.12, 15,307.56 and 9,779.76

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Solution

The fourth proportional to 10,275.12, 15,307.56 and 9,779.76 is: 14,569.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,275.12 : 15,307.56 = 9,779.76 : x
  2. Step 2: Convert to fraction form
    10,275.12/15,307.56 = 9,779.76/x
  3. Step 3: Cross multiply
    10,275.12x = 15,307.56 × 9,779.76
  4. Step 4: Simplify right side
    10,275.12x = 149,704,262.99
  5. Step 5: Solve for x
    x = 149,704,262.99/10,275.12
  6. Step 6: Final answer
    x = 14,569.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.