Home / 16,988.29-23,445.36-9,916.99

Finding the Fourth Proportional to 16,988.29, 23,445.36 and 9,916.99

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Solution

The fourth proportional to 16,988.29, 23,445.36 and 9,916.99 is: 13,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.29 : 23,445.36 = 9,916.99 : x
  2. Step 2: Convert to fraction form
    16,988.29/23,445.36 = 9,916.99/x
  3. Step 3: Cross multiply
    16,988.29x = 23,445.36 × 9,916.99
  4. Step 4: Simplify right side
    16,988.29x = 232,507,400.67
  5. Step 5: Solve for x
    x = 232,507,400.67/16,988.29
  6. Step 6: Final answer
    x = 13,686.33

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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.