Home / 15,583.47-21,499.02-9,916.71

Finding the Fourth Proportional to 15,583.47, 21,499.02 and 9,916.71

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Solution

The fourth proportional to 15,583.47, 21,499.02 and 9,916.71 is: 13,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.47 : 21,499.02 = 9,916.71 : x
  2. Step 2: Convert to fraction form
    15,583.47/21,499.02 = 9,916.71/x
  3. Step 3: Cross multiply
    15,583.47x = 21,499.02 × 9,916.71
  4. Step 4: Simplify right side
    15,583.47x = 213,199,546.62
  5. Step 5: Solve for x
    x = 213,199,546.62/15,583.47
  6. Step 6: Final answer
    x = 13,681.13

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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.