Home / 10,140.26-14,065.14-9,870.53

Finding the Fourth Proportional to 10,140.26, 14,065.14 and 9,870.53

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Solution

The fourth proportional to 10,140.26, 14,065.14 and 9,870.53 is: 13,691.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.26 : 14,065.14 = 9,870.53 : x
  2. Step 2: Convert to fraction form
    10,140.26/14,065.14 = 9,870.53/x
  3. Step 3: Cross multiply
    10,140.26x = 14,065.14 × 9,870.53
  4. Step 4: Simplify right side
    10,140.26x = 138,830,353.01
  5. Step 5: Solve for x
    x = 138,830,353.01/10,140.26
  6. Step 6: Final answer
    x = 13,691.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.