Home / 35,430.80-53,146.20-15,688.40

Finding the Fourth Proportional to 35,430.80, 53,146.20 and 15,688.40

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Solution

The fourth proportional to 35,430.80, 53,146.20 and 15,688.40 is: 23,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,430.80 : 53,146.20 = 15,688.40 : x
  2. Step 2: Convert to fraction form
    35,430.80/53,146.20 = 15,688.40/x
  3. Step 3: Cross multiply
    35,430.80x = 53,146.20 × 15,688.40
  4. Step 4: Simplify right side
    35,430.80x = 833,778,844.08
  5. Step 5: Solve for x
    x = 833,778,844.08/35,430.80
  6. Step 6: Final answer
    x = 23,532.60

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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.