Home / 35,487.18-53,221.68-10,521.40

Finding the Fourth Proportional to 35,487.18, 53,221.68 and 10,521.40

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Solution

The fourth proportional to 35,487.18, 53,221.68 and 10,521.40 is: 15,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,487.18 : 53,221.68 = 10,521.40 : x
  2. Step 2: Convert to fraction form
    35,487.18/53,221.68 = 10,521.40/x
  3. Step 3: Cross multiply
    35,487.18x = 53,221.68 × 10,521.40
  4. Step 4: Simplify right side
    35,487.18x = 559,966,583.95
  5. Step 5: Solve for x
    x = 559,966,583.95/35,487.18
  6. Step 6: Final answer
    x = 15,779.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.